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j.aquabot.2014.08.001.pdf | 240.9 kB | Adobe PDF | 見る/開く |
タイトル: | Seed dormancy and germination traits of an endangered aquatic plant species, Euryale ferox Salisb. (Nymphaeaceae) |
著者: | Imanishi, Ayumi Imanishi, Junichi |
著者名の別形: | 今西, 亜友美 今西, 純一 |
キーワード: | Nymphaeaceae Vulnerable Cold stratification Dormancy induction Light-temperature interaction |
発行日: | Oct-2014 |
出版者: | Elsevier B.V. |
誌名: | Aquatic Botany |
巻: | 119 |
開始ページ: | 80 |
終了ページ: | 83 |
抄録: | Populations of Euryale ferox Salisb. have declined throughout its global range because of habitat loss and degradation. The present study aimed to evaluate the influence of storage temperature (4 and 20°C), storage period (0, 90, 180, 270, and 360 days), light condition (light and darkness), germination temperature (constant 10, 15, 20, 25, and 30°C), and seed size (two classes from 0.5 cm to less than 1.2 cm, and from 1.2 cm to less than 1.6 cm) on germination of E. ferox seeds. Our results indicated that seeds were dormant when shed and 4°C stratification promoted germination more effectively than 20°C. After stratification at 4°C, the germination frequency of the larger seeds peaked at 90 days’ stratification, whereas the smaller seeds maintained high germination frequencies up to 180 days’ stratification. The different germination responses between smaller and larger seeds may reflect a difference in the rate of induction of dormancy in the annual dormancy cycle. Seeds germinated in both light and darkness, which demonstrated that light is not involved in the regulation of E. ferox seed germination. The optimal temperature for germination was 25°C. Light condition × germination temperature interaction caused significantly higher germination frequency at 30°C in light than in darkness, and the opposite trend at 15°C. |
著作権等: | © 2014 Elsevier B.V. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/191026 |
DOI(出版社版): | 10.1016/j.aquabot.2014.08.001 |
出現コレクション: | 学術雑誌掲載論文等 |
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